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How do I bind a view model property to the ListBox.SelectedItem property? I have created a simple MVVM demo to try to figure this one out. My view model has these properties: private ObservableCollection<DisneyCharacter> p_DisneyCharacters; public ObservableCollection<DisneyCharacter> DisneyCharacters { get { return p_DisneyCharacters; } set { p_DisneyCharacters = value; base.FirePropertyChangedEvent("DisneyCharacters"); } } private DisneyCharacter p_SelectedItem; public DisneyCharacter SelectedItem { get { return p_SelectedItem; } set { p_SelectedItem = value; base.FirePropertyChangedEvent("SelectedItem"); } } I want to bind the SelectedItem property to the item selected in the list box. Here is the XAML for the list box: <ListBox ItemTemplate="{StaticResource MasterTemplate}" ItemsSource="{Binding Path=DisneyCharacters}" SelectedItem="{Binding Path=Selectedtem, Mode=TwoWay}" HorizontalAlignment="Stretch" /> Here is my problem: The view model SelectedItem property isn't being updated when I change the selection in the list box. I did a test where I temporarily replaced the view model SelectedItem property with a SelectedIndex property, and I bound that to the ListBox.SelectedIndex property. That property updated fine--it's just the SelectedItem property that I can't get to work. So, how do I fix the SelectedItem binding? Thanks for your help.

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